This study reported a series of cube-shaped polyoxoniobates, {MCuO)(CuXO)(Nb(OH)O)} [M = Nb(1, 2), Ln(3), X = I(1, = 3, = 3; 2, = 5, = 1), Br(3, = 5, = 1)]. As the first octahedral CuXO cluster incorporated polyoxoniobate, the cube-shaped three-shell structure of {MCuO)(CuXO)(Nb(OH)O)} polyanion contains a {MCuO} body-centered cuboctahedron, a {CuXO} octahedron and a {Cu(Nb(OH)O)} cube. Compounds 1, 2, 3 show effective catalytic activities for the hydrolytic decomposition of chemical warefare agent simulants.
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http://dx.doi.org/10.3389/fchem.2020.586009 | DOI Listing |
Inorg Chem
March 2023
Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
The crystallization of a new series of A-site substituted lanthanum ferrite materials (LaRE)FeO was explored by the hydrothermal method at 240 °C, for rare earth (RE) = Nd, Sm, Gd, Ho, Er, Yb, and Y, with 0 ≤ ≤ 1. The effect of elemental substitution on the morphological, structural, and magnetic properties of the materials was studied using high-resolution powder X-ray diffraction, energy dispersive spectroscopy (EDS) on the scanning electron microscope, Raman spectroscopy, and SQUID magnetometry. If the radius of the La and the substituent ions is similar, such as for Nd, Sm, and Gd, homogeneous solid solutions are formed, with the orthorhombic GdFeO-type structure, and a continuous evolution of Raman spectra with composition and distinct magnetic behavior from the end members.
View Article and Find Full Text PDFFront Chem
December 2020
State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, China.
This study reported a series of cube-shaped polyoxoniobates, {MCuO)(CuXO)(Nb(OH)O)} [M = Nb(1, 2), Ln(3), X = I(1, = 3, = 3; 2, = 5, = 1), Br(3, = 5, = 1)]. As the first octahedral CuXO cluster incorporated polyoxoniobate, the cube-shaped three-shell structure of {MCuO)(CuXO)(Nb(OH)O)} polyanion contains a {MCuO} body-centered cuboctahedron, a {CuXO} octahedron and a {Cu(Nb(OH)O)} cube. Compounds 1, 2, 3 show effective catalytic activities for the hydrolytic decomposition of chemical warefare agent simulants.
View Article and Find Full Text PDFDrug Deliv Transl Res
April 2018
Department of Pharmaceutical Sciences, University of Pittsburgh, 808A Salk Hall, 3501 Terrace Street, Pittsburgh, PA, 15261, USA.
Cerium oxide nanoparticles (CNPs) represent a promising class of antioxidant nanoparticles with potential therapeutic value. Due to the easily reversible oxidation states of cerium (Ce and Ce) at the nanoscale, CNPs scavenge excessive reactive oxygen and nitrogen species in a self-regenerative manner. In this study, we have demonstrated a simple method to functionalize shape-specific CNPs (i.
View Article and Find Full Text PDFUreteral peristalsis can be considered as a series of waves on the ureteral wall, which transfers the urine along the ureter toward the bladder. The stones that form in the kidney and migrate to the ureter can create a substantial health problem due to the pain caused by interaction of the ureteral walls and stones during the peristaltic motion. Three-dimensional (3D) computational fluid dynamics (CFD) simulations were carried out using the commercial code ansys fluent to solve for the peristaltic movement of the ureter, with and without stones.
View Article and Find Full Text PDFInorg Chem
November 2010
Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avenida Fuentenueva S/N, 18071 Granada, Spain.
The syntheses, crystal structures, and the experimental and theoretical magnetochemical characterization for three tetrametallic Ni(II) clusters, namely, [Ni(4)(L)(4)(Cl)(2)(MeOH)(2)](ClO(4))(2)·4MeOH (1), [Ni(4)(L)(4)(N(3))(2)(MeOH)(2)](ClO(4))(2)·2MeOH (2), and [Ni(4)(L1)(4)(pyz)(2)(PhCOO)(2)(MeOH)(2)](ClO(4))(2)·7MeOH (3) (where HL and HL1 represent bipyridine-2-carboxamideoxime and pyrimidine-2-carboxamideoxime, respectively) are reported. Within the Ni(4)(2+) units of these compounds, distorted octahedral Ni(II) ions are bridged by carboxamideoximato ligands to adopt a distorted tetrahedral disposition. The Ni(4)(2+) unit, of C(2) symmetry, can also be viewed as a cube with single [O-atom] and double [NO oxime] bridging groups as atom edges, which define two almost square-planar Ni(O)(2)Ni rings and four irregular hexagonal Ni(NO)(2)Ni rings.
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